Stockpiles should be constructed by which method?

Stockpiles for hot mix asphalt (HMA) should be constructed using power equipment because this method ensures efficiency, consistency, and better material management. Power equipment, such as loaders and dump trucks, allows for the rapid placement of asphalt materials, which is essential for maintaining the quality and integrity of the stockpile. This method also enables the operator to control the compaction and geometry of the pile, minimizing air pockets and segregation, which can negatively impact the asphalt mix's performance.

Using power equipment also reduces the physical strain on workers and enhances safety on the job site, as it minimizes the risk of accidents that can occur with manual handling. In contrast, techniques that rely on shovels or manual labor are less efficient, more time-consuming, and could lead to inconsistent stockpile quality due to the variability in how the material is placed. Therefore, utilizing power equipment is the most effective and practical approach for constructing asphalt stockpiles.